allows you to create a custom calendar for recording any detailed itinerary or expense journal. Trip Kit is a spreadsheet utility which lets you design a calendar for your itinerary, enabling you to keep a detailed account of miles traveled and money spent.

You can compute all your expenses on a cost-per-day basis, convert between numerous currencies, and look up important and useful phone numbers in the built-in listing.

Validate Credit Card Uses Luhn's Algorithm to check and validate Credit Card Numbers. Except simply Validating the numbers, it also gives the Type of Credit Card. For example Visa, AMEX, Master Card etc. It also gives the checksum required for the CC to be valid.